onsemi

6N138SDM

6N138SDM Description

The 6N138SDM from onsemi is a high-performance, single-channel Darlington optocoupler with base designed for DC input applications requiring robust electrical isolation. It features a 5,000Vrms isolation voltage, making it ideal for environments where high-voltage separation is critical. The device delivers a minimum current transfer ratio (CTR) of 300% at 1.6mA, ensuring reliable signal amplification. With a forward voltage (Vf) of 1.3V (Typ) and a maximum output current of 60mA, it balances efficiency and drive capability. Packaged in an 8-pin surface-mount (SMD) Tape & Reel (TR) format, it is optimized for automated assembly processes.

6N138SDM Features

• High Isolation Voltage: 5,000Vrms ensures safety in high-voltage systems.
• Darlington with Base Configuration: Enhances output drive capability and simplifies external biasing.
• Fast Switching: Turn-on/off times of 1µs (Typ) and 7.3µs (Typ) for responsive performance.
• Wide CTR Range: 300% minimum at 1.6mA guarantees consistent signal transfer.
• Low Forward Voltage: 1.3V (Typ) reduces power dissipation.
• RoHS3 & REACH Compliant: Meets environmental and regulatory standards.
• Surface-Mount Design: Compact 8-SMD package suits space-constrained PCB layouts.

6N138SDM Applications

• Industrial Automation: Isolate PLCs, motor drives, and sensors in noisy environments.
• Medical Equipment: Ensure patient safety in diagnostic and monitoring systems.
• Power Supplies: Provide feedback isolation in SMPS and inverters.
• Telecom Infrastructure: Protect low-voltage control circuits in high-voltage telecom systems.
• Renewable Energy: Interface between PV inverters and grid-tie systems.

Conclusion of 6N138SDM

The 6N138SDM stands out for its high isolation, Darlington output, and reliable CTR performance, making it a superior choice for demanding isolation tasks. Its fast switching, low Vf, and SMD packaging cater to modern electronics requiring efficiency and compactness. Whether in industrial, medical, or energy systems, this optocoupler delivers robust, high-performance isolation with compliance to global standards.